The Runnymede College House System was established by Arthur F Powell in 1967 and comprises four Houses: Austen (yellow), Keynes (green), Locke (red) and Newton (blue). Every child is assigned to a House on joining the School and members of the same family are members of the same House.

An attempt is also made to ensure that there is the same number of pupils in each House in the School, and an equal spread of boys and girls and within each Form. The House System seeks to stimulate pupils through the opinions and enthusiasms of the group to achieve higher standards in studies, conduct and physical education. Teachers, including PE teachers, award Good and Bad House Points for conduct and work (especially for effort). At each half-term and at the end of term these House Points are added up and an Assembly is held in which the Headmaster announces the total scores. At the end of the school year, at Prize Giving, the winning House is awarded the House Cup and, likewise, an Interhouse Sports Cup is also awarded.